Cement objects having polished and translucent surfaces



Patented Jan. 13, 1931 I UNITED STATES SPERANZA. SEAILLES, NEE GALOGEROPOULOS, Ann JEAN sEAIL Es;orrnnrs,. rnniwcn, ASSIGNORS, BY MESNE ASSIGNMENTS, 'ronLrR-En r. BouneoAnnnz I CEMENT OBJECTS HAVING POLISHED AND TRANSLUQENT SunrAoEsf No Drawing. Application filed May 25, 1925, Serial in. 32,831, .and ini mac-as 30', ie2 4 In our U. S. patent application Serial No. 686,928 filed on the 17th of January, 1924, which has become Patent No. 1,600,514, we

set forth a process for the manufacture of i or metal and are polished, coated or enameled in such manner as to form a smooth and polished surface. The cement mixture is optionally brought into the compact state by jarring or repeated shocks, settling, compression or like means, and it is then subjected to the setting process and the first hardening, in contact with the mold, for 12-18 hours.

We thus obtain a brilliant and polished 7 surface, as is the case in known conditions with the usual aluminous cements, but our resulting product will further afford translucent properties which are not possessed by the products manufactured in the same condit-ions with the ordinary aluminous cements. 'With the-special aluminous cements we may thus obtain products capable of entering into competition with the ceramic productshaving analogous translucent properties, and this represents a great progress in the manufacture in virtue of the simple and inexpensive production of the articles which are subjected to setting in the cold state, as compared with the ceramic baking processes.

We apply the terms special aluminous cements to the whole series of products ranging from the silico-aluminous compounds wherein the aluminates of lime preponderate, to

the monocalcic, bicalcic and tricalcic alumis greater I than 0,6, but 'whe'rein the roper polished "terial to which'are fadded' the known effects:

low, :or" white,,- which I gives 1 them; av g-reat byithe fact that theirlindex 1 silica-Falumina t lime+ magnesia mates, for instance; which are characterized tionfof' iron iS'less than 1,5 per cent, whilst the normal almuinous cementscontain acon siderable amount of iron which is 'fromfi to '15'per cent as a rule.

'We .havefurther observed that aluminate of lime, Al' OQ CaO ina-practically pure state, i. e. containing*less than'fi per-cent of impurities and less than 5 per cent,possesses superior qualities of translucency andz hardness, will aiford surfaces which are chieflyadvantageous as concerns their: use

for facing or flooring purposes.

The translucent nature of the aluminous products according to the invention; in combination Withthe additionnal loading substances, will afford natural decorativeefl'ects of a widelywvarying character,"due to the transparency ofthe surface grain of the ma- 1 of decorative crystallization ofi'ered byi the 7 normal aluminous cements. I

Another feature lofjmy- 'said products is their light color,"su'cli"as light gray, light yelvalue for; decorative uses or, for facings, in virtue of their luminous nature due to, their light color and translucent character. v. {Wemay-1-further color'the said'products by the addition of coloring,matter,,or;may decc ateth m-by1 at nat1 e me dw f the casting, with fluid coloring, matter optionally mixed with the said special cements which become incorporated with the coloring matter at the time of the setting, and thesame may be disposed in decorations, designs or lettering, and the like. The coloring matter may also be used in the form of a dry powder; it may be sprinkled over with dry cement before the casting operation, in order to prevent all damage to the designs.

The special cements, and chiefly the monocalcic aluminate, may be used ina very thin layer to economize these expensive products,

' obliged to wait for the hardening or the setting of the first thin layer. In these condiness of normal aluminous cement, or even ordinary Port-land. cement, without beingtions, in spite of the differences in the nature or --the'composition ofthesuperposed layers, the iwhole arrangement will :set 'together without any difiioulty, and very econornical results will be obtained in spite of the'u se 'ofspecial'products of a relatively ex pensive nature and even though authorities state thatmixtures of dilferent cements areto.

be avoided' We may partially.coatthemold with-thin metal leaf such as gold leaf, or similar leafconsisting 10f copper, silver or other metals.

faction of th'e 'metal. The translucent part I may-also-becolored or decorated,thus obtaining decorative effect andvariied nature.

The mold is then'filled-as before, and we thus combine the effect of the metal coated parts with the translucent 'efiect of the substances, and the setting'wil'l-result 'in a veritable petris of a remarkable What we claim is:

facture, a casting ofaluminous cementcontaining less than 1.5% {of ironand having a polished translucent surface.

30' ing of a-luminous cement-mixed with coloring :matter and containing less than 1.5% of iron 2. Asa new-articleof manufacture, a castand having a-{polished decorative translucent surface.

casting of .aluminous cement containing less -;than 1-.5% of ironinixed with coloring matv :3. As a. new article of 'manufacture, a

'ter andhaving a-polished 'translucen'tsurface partly overlaid with thin leaivesof a metal. 7

-4i As a newarticle of manufacture, a-cast- :mg of alu'minous icenient- Whose index:

silica +a1um na 'lime-lmagnesia I is greater than 0.6 and which' contains less than :1;5' percent ofiron, said casting being characterized-"by a polished translucentsurface.

In testimonywhereof w specification.

PER'ANZA sEAILLEs, ne cALoeERoPoULos.

. JEAN sw ms. I

e have signed 

